80284540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 213736320

約数和(自身を除く): 133451780

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 61, 68, 70, 79, 85, 98, 119, 122, 140, 158, 170, 196, 238, 244, 245, 305, 316, 340, 395, 427, 476, 490, 553, 595, 610, 790, 833, 854, 980, 1037, 1106, 1190, 1220, 1343, 1580, 1666, 1708, 2074, 2135, 2212, 2380, 2686, 2765, 2989, 3332, 3871, 4148, 4165, 4270, 4819, 5185, 5372, 5530, 5978, 6715, 7259, 7742, 8330, 8540, 9401, 9638, 10370, 11060, 11956, 13430, 14518, 14945, 15484, 16660, 18802, 19276, 19355, 20740, 24095, 26860, 29036, 29890, 33733, 36295, 37604, 38710, 47005, 48190, 50813, 59780, 65807, 67466, 72590, 77420, 81923, 94010, 96380, 101626, 131614, 134932, 145180, 163846, 168665, 188020, 203252, 236131, 254065, 263228, 327692, 329035, 337330, 409615, 472262, 508130, 573461, 658070, 674660, 819230, 944524, 1016260, 1146922, 1180655, 1316140, 1638460, 2293844, 2361310, 2867305, 4014227, 4722620, 5734610, 8028454, 11469220, 16056908, 20071135, 40142270, 80284540]

約数ペア:

[(1, 80284540), (2, 40142270), (4, 20071135), (5, 16056908), (7, 11469220), (10, 8028454), (14, 5734610), (17, 4722620), (20, 4014227), (28, 2867305), (34, 2361310), (35, 2293844), (49, 1638460), (61, 1316140), (68, 1180655), (70, 1146922), (79, 1016260), (85, 944524), (98, 819230), (119, 674660), (122, 658070), (140, 573461), (158, 508130), (170, 472262), (196, 409615), (238, 337330), (244, 329035), (245, 327692), (305, 263228), (316, 254065), (340, 236131), (395, 203252), (427, 188020), (476, 168665), (490, 163846), (553, 145180), (595, 134932), (610, 131614), (790, 101626), (833, 96380), (854, 94010), (980, 81923), (1037, 77420), (1106, 72590), (1190, 67466), (1220, 65807), (1343, 59780), (1580, 50813), (1666, 48190), (1708, 47005), (2074, 38710), (2135, 37604), (2212, 36295), (2380, 33733), (2686, 29890), (2765, 29036), (2989, 26860), (3332, 24095), (3871, 20740), (4148, 19355), (4165, 19276), (4270, 18802), (4819, 16660), (5185, 15484), (5372, 14945), (5530, 14518), (5978, 13430), (6715, 11956), (7259, 11060), (7742, 10370), (8330, 9638), (8540, 9401)]