128981720

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 160

約数和(自身を含む): 363009600

約数和(自身を除く): 234027880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 79, 85, 98, 119, 136, 140, 158, 170, 196, 238, 245, 280, 316, 340, 343, 392, 395, 476, 490, 553, 595, 632, 680, 686, 790, 833, 952, 980, 1106, 1190, 1343, 1372, 1580, 1666, 1715, 1960, 2212, 2380, 2401, 2686, 2744, 2765, 3160, 3332, 3430, 3871, 4165, 4424, 4760, 4802, 5372, 5530, 5831, 6664, 6715, 6860, 7742, 8330, 9401, 9604, 10744, 11060, 11662, 12005, 13430, 13720, 15484, 16660, 18802, 19208, 19355, 22120, 23324, 24010, 26860, 27097, 29155, 30968, 33320, 37604, 38710, 40817, 46648, 47005, 48020, 53720, 54194, 58310, 65807, 75208, 77420, 81634, 94010, 96040, 108388, 116620, 131614, 135485, 154840, 163268, 188020, 189679, 204085, 216776, 233240, 263228, 270970, 326536, 329035, 376040, 379358, 408170, 460649, 526456, 541940, 658070, 758716, 816340, 921298, 948395, 1083880, 1316140, 1517432, 1632680, 1842596, 1896790, 2303245, 2632280, 3224543, 3685192, 3793580, 4606490, 6449086, 7587160, 9212980, 12898172, 16122715, 18425960, 25796344, 32245430, 64490860, 128981720]

約数ペア:

[(1, 128981720), (2, 64490860), (4, 32245430), (5, 25796344), (7, 18425960), (8, 16122715), (10, 12898172), (14, 9212980), (17, 7587160), (20, 6449086), (28, 4606490), (34, 3793580), (35, 3685192), (40, 3224543), (49, 2632280), (56, 2303245), (68, 1896790), (70, 1842596), (79, 1632680), (85, 1517432), (98, 1316140), (119, 1083880), (136, 948395), (140, 921298), (158, 816340), (170, 758716), (196, 658070), (238, 541940), (245, 526456), (280, 460649), (316, 408170), (340, 379358), (343, 376040), (392, 329035), (395, 326536), (476, 270970), (490, 263228), (553, 233240), (595, 216776), (632, 204085), (680, 189679), (686, 188020), (790, 163268), (833, 154840), (952, 135485), (980, 131614), (1106, 116620), (1190, 108388), (1343, 96040), (1372, 94010), (1580, 81634), (1666, 77420), (1715, 75208), (1960, 65807), (2212, 58310), (2380, 54194), (2401, 53720), (2686, 48020), (2744, 47005), (2765, 46648), (3160, 40817), (3332, 38710), (3430, 37604), (3871, 33320), (4165, 30968), (4424, 29155), (4760, 27097), (4802, 26860), (5372, 24010), (5530, 23324), (5831, 22120), (6664, 19355), (6715, 19208), (6860, 18802), (7742, 16660), (8330, 15484), (9401, 13720), (9604, 13430), (10744, 12005), (11060, 11662)]