19905210

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:189

約数の個数: 128

約数和(自身を含む): 58786560

約数和(自身を除く): 38881350

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 53, 54, 65, 78, 90, 106, 107, 117, 130, 135, 159, 195, 214, 234, 265, 270, 318, 321, 351, 390, 477, 530, 535, 585, 642, 689, 702, 795, 954, 963, 1070, 1170, 1378, 1391, 1431, 1590, 1605, 1755, 1926, 2067, 2385, 2782, 2862, 2889, 3210, 3445, 3510, 4134, 4173, 4770, 4815, 5671, 5778, 6201, 6890, 6955, 7155, 8346, 9630, 10335, 11342, 12402, 12519, 13910, 14310, 14445, 17013, 18603, 20670, 20865, 25038, 28355, 28890, 31005, 34026, 37206, 37557, 41730, 51039, 56710, 62010, 62595, 73723, 75114, 85065, 93015, 102078, 125190, 147446, 153117, 170130, 186030, 187785, 221169, 255195, 306234, 368615, 375570, 442338, 510390, 663507, 737230, 765585, 1105845, 1327014, 1531170, 1990521, 2211690, 3317535, 3981042, 6635070, 9952605, 19905210]

約数ペア:

[(1, 19905210), (2, 9952605), (3, 6635070), (5, 3981042), (6, 3317535), (9, 2211690), (10, 1990521), (13, 1531170), (15, 1327014), (18, 1105845), (26, 765585), (27, 737230), (30, 663507), (39, 510390), (45, 442338), (53, 375570), (54, 368615), (65, 306234), (78, 255195), (90, 221169), (106, 187785), (107, 186030), (117, 170130), (130, 153117), (135, 147446), (159, 125190), (195, 102078), (214, 93015), (234, 85065), (265, 75114), (270, 73723), (318, 62595), (321, 62010), (351, 56710), (390, 51039), (477, 41730), (530, 37557), (535, 37206), (585, 34026), (642, 31005), (689, 28890), (702, 28355), (795, 25038), (954, 20865), (963, 20670), (1070, 18603), (1170, 17013), (1378, 14445), (1391, 14310), (1431, 13910), (1590, 12519), (1605, 12402), (1755, 11342), (1926, 10335), (2067, 9630), (2385, 8346), (2782, 7155), (2862, 6955), (2889, 6890), (3210, 6201), (3445, 5778), (3510, 5671), (4134, 4815), (4173, 4770)]