28462980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{401}}^1$

素因数の和:446

約数の個数: 144

約数和(自身を含む): 98872704

約数和(自身を除く): 70409724

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 169, 182, 195, 210, 260, 273, 338, 364, 390, 401, 420, 455, 507, 546, 676, 780, 802, 845, 910, 1014, 1092, 1183, 1203, 1365, 1604, 1690, 1820, 2005, 2028, 2366, 2406, 2535, 2730, 2807, 3380, 3549, 4010, 4732, 4812, 5070, 5213, 5460, 5614, 5915, 6015, 7098, 8020, 8421, 10140, 10426, 11228, 11830, 12030, 14035, 14196, 15639, 16842, 17745, 20852, 23660, 24060, 26065, 28070, 31278, 33684, 35490, 36491, 42105, 52130, 56140, 62556, 67769, 70980, 72982, 78195, 84210, 104260, 109473, 135538, 145964, 156390, 168420, 182455, 203307, 218946, 271076, 312780, 338845, 364910, 406614, 437892, 474383, 547365, 677690, 729820, 813228, 948766, 1016535, 1094730, 1355380, 1423149, 1897532, 2033070, 2189460, 2371915, 2846298, 4066140, 4743830, 5692596, 7115745, 9487660, 14231490, 28462980]

約数ペア:

[(1, 28462980), (2, 14231490), (3, 9487660), (4, 7115745), (5, 5692596), (6, 4743830), (7, 4066140), (10, 2846298), (12, 2371915), (13, 2189460), (14, 2033070), (15, 1897532), (20, 1423149), (21, 1355380), (26, 1094730), (28, 1016535), (30, 948766), (35, 813228), (39, 729820), (42, 677690), (52, 547365), (60, 474383), (65, 437892), (70, 406614), (78, 364910), (84, 338845), (91, 312780), (105, 271076), (130, 218946), (140, 203307), (156, 182455), (169, 168420), (182, 156390), (195, 145964), (210, 135538), (260, 109473), (273, 104260), (338, 84210), (364, 78195), (390, 72982), (401, 70980), (420, 67769), (455, 62556), (507, 56140), (546, 52130), (676, 42105), (780, 36491), (802, 35490), (845, 33684), (910, 31278), (1014, 28070), (1092, 26065), (1183, 24060), (1203, 23660), (1365, 20852), (1604, 17745), (1690, 16842), (1820, 15639), (2005, 14196), (2028, 14035), (2366, 12030), (2406, 11830), (2535, 11228), (2730, 10426), (2807, 10140), (3380, 8421), (3549, 8020), (4010, 7098), (4732, 6015), (4812, 5915), (5070, 5614), (5213, 5460)]