19402890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:168

約数の個数: 96

約数和(自身を含む): 52176960

約数和(自身を除く): 32774070

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 89, 129, 130, 169, 178, 195, 215, 258, 267, 338, 390, 430, 445, 507, 534, 559, 645, 845, 890, 1014, 1118, 1157, 1290, 1335, 1677, 1690, 2314, 2535, 2670, 2795, 3354, 3471, 3827, 5070, 5590, 5785, 6942, 7267, 7654, 8385, 11481, 11570, 14534, 15041, 16770, 17355, 19135, 21801, 22962, 30082, 34710, 36335, 38270, 43602, 45123, 49751, 57405, 72670, 75205, 90246, 99502, 109005, 114810, 149253, 150410, 218010, 225615, 248755, 298506, 451230, 497510, 646763, 746265, 1293526, 1492530, 1940289, 3233815, 3880578, 6467630, 9701445, 19402890]

約数ペア:

[(1, 19402890), (2, 9701445), (3, 6467630), (5, 3880578), (6, 3233815), (10, 1940289), (13, 1492530), (15, 1293526), (26, 746265), (30, 646763), (39, 497510), (43, 451230), (65, 298506), (78, 248755), (86, 225615), (89, 218010), (129, 150410), (130, 149253), (169, 114810), (178, 109005), (195, 99502), (215, 90246), (258, 75205), (267, 72670), (338, 57405), (390, 49751), (430, 45123), (445, 43602), (507, 38270), (534, 36335), (559, 34710), (645, 30082), (845, 22962), (890, 21801), (1014, 19135), (1118, 17355), (1157, 16770), (1290, 15041), (1335, 14534), (1677, 11570), (1690, 11481), (2314, 8385), (2535, 7654), (2670, 7267), (2795, 6942), (3354, 5785), (3471, 5590), (3827, 5070)]