21730410

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:221

約数の個数: 128

約数和(自身を含む): 64350720

約数和(自身を除く): 42620310

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 41, 45, 54, 65, 78, 82, 90, 117, 123, 130, 135, 151, 195, 205, 234, 246, 270, 302, 351, 369, 390, 410, 453, 533, 585, 615, 702, 738, 755, 906, 1066, 1107, 1170, 1230, 1359, 1510, 1599, 1755, 1845, 1963, 2214, 2265, 2665, 2718, 3198, 3510, 3690, 3926, 4077, 4530, 4797, 5330, 5535, 5889, 6191, 6795, 7995, 8154, 9594, 9815, 11070, 11778, 12382, 13590, 14391, 15990, 17667, 18573, 19630, 20385, 23985, 28782, 29445, 30955, 35334, 37146, 40770, 47970, 53001, 55719, 58890, 61910, 71955, 80483, 88335, 92865, 106002, 111438, 143910, 160966, 167157, 176670, 185730, 241449, 265005, 278595, 334314, 402415, 482898, 530010, 557190, 724347, 804830, 835785, 1207245, 1448694, 1671570, 2173041, 2414490, 3621735, 4346082, 7243470, 10865205, 21730410]

約数ペア:

[(1, 21730410), (2, 10865205), (3, 7243470), (5, 4346082), (6, 3621735), (9, 2414490), (10, 2173041), (13, 1671570), (15, 1448694), (18, 1207245), (26, 835785), (27, 804830), (30, 724347), (39, 557190), (41, 530010), (45, 482898), (54, 402415), (65, 334314), (78, 278595), (82, 265005), (90, 241449), (117, 185730), (123, 176670), (130, 167157), (135, 160966), (151, 143910), (195, 111438), (205, 106002), (234, 92865), (246, 88335), (270, 80483), (302, 71955), (351, 61910), (369, 58890), (390, 55719), (410, 53001), (453, 47970), (533, 40770), (585, 37146), (615, 35334), (702, 30955), (738, 29445), (755, 28782), (906, 23985), (1066, 20385), (1107, 19630), (1170, 18573), (1230, 17667), (1359, 15990), (1510, 14391), (1599, 13590), (1755, 12382), (1845, 11778), (1963, 11070), (2214, 9815), (2265, 9594), (2665, 8154), (2718, 7995), (3198, 6795), (3510, 6191), (3690, 5889), (3926, 5535), (4077, 5330), (4530, 4797)]