19850220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{499}}^1$

素因数の和:544

約数の個数: 144

約数和(自身を含む): 68796000

約数和(自身を除く): 48945780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 30, 34, 36, 39, 45, 51, 52, 60, 65, 68, 78, 85, 90, 102, 117, 130, 153, 156, 170, 180, 195, 204, 221, 234, 255, 260, 306, 340, 390, 442, 468, 499, 510, 585, 612, 663, 765, 780, 884, 998, 1020, 1105, 1170, 1326, 1497, 1530, 1989, 1996, 2210, 2340, 2495, 2652, 2994, 3060, 3315, 3978, 4420, 4491, 4990, 5988, 6487, 6630, 7485, 7956, 8483, 8982, 9945, 9980, 12974, 13260, 14970, 16966, 17964, 19461, 19890, 22455, 25449, 25948, 29940, 32435, 33932, 38922, 39780, 42415, 44910, 50898, 58383, 64870, 76347, 77844, 84830, 89820, 97305, 101796, 110279, 116766, 127245, 129740, 152694, 169660, 194610, 220558, 233532, 254490, 291915, 305388, 330837, 381735, 389220, 441116, 508980, 551395, 583830, 661674, 763470, 992511, 1102790, 1167660, 1323348, 1526940, 1654185, 1985022, 2205580, 3308370, 3970044, 4962555, 6616740, 9925110, 19850220]

約数ペア:

[(1, 19850220), (2, 9925110), (3, 6616740), (4, 4962555), (5, 3970044), (6, 3308370), (9, 2205580), (10, 1985022), (12, 1654185), (13, 1526940), (15, 1323348), (17, 1167660), (18, 1102790), (20, 992511), (26, 763470), (30, 661674), (34, 583830), (36, 551395), (39, 508980), (45, 441116), (51, 389220), (52, 381735), (60, 330837), (65, 305388), (68, 291915), (78, 254490), (85, 233532), (90, 220558), (102, 194610), (117, 169660), (130, 152694), (153, 129740), (156, 127245), (170, 116766), (180, 110279), (195, 101796), (204, 97305), (221, 89820), (234, 84830), (255, 77844), (260, 76347), (306, 64870), (340, 58383), (390, 50898), (442, 44910), (468, 42415), (499, 39780), (510, 38922), (585, 33932), (612, 32435), (663, 29940), (765, 25948), (780, 25449), (884, 22455), (998, 19890), (1020, 19461), (1105, 17964), (1170, 16966), (1326, 14970), (1497, 13260), (1530, 12974), (1989, 9980), (1996, 9945), (2210, 8982), (2340, 8483), (2495, 7956), (2652, 7485), (2994, 6630), (3060, 6487), (3315, 5988), (3978, 4990), (4420, 4491)]