19779500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:228

約数の個数: 96

約数和(自身を含む): 49533120

約数和(自身を除く): 29753620

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 125, 130, 170, 179, 221, 250, 260, 325, 340, 358, 425, 442, 500, 650, 716, 850, 884, 895, 1105, 1300, 1625, 1700, 1790, 2125, 2210, 2327, 3043, 3250, 3580, 4250, 4420, 4475, 4654, 5525, 6086, 6500, 8500, 8950, 9308, 11050, 11635, 12172, 15215, 17900, 22100, 22375, 23270, 27625, 30430, 39559, 44750, 46540, 55250, 58175, 60860, 76075, 79118, 89500, 110500, 116350, 152150, 158236, 197795, 232700, 290875, 304300, 380375, 395590, 581750, 760750, 791180, 988975, 1163500, 1521500, 1977950, 3955900, 4944875, 9889750, 19779500]

約数ペア:

[(1, 19779500), (2, 9889750), (4, 4944875), (5, 3955900), (10, 1977950), (13, 1521500), (17, 1163500), (20, 988975), (25, 791180), (26, 760750), (34, 581750), (50, 395590), (52, 380375), (65, 304300), (68, 290875), (85, 232700), (100, 197795), (125, 158236), (130, 152150), (170, 116350), (179, 110500), (221, 89500), (250, 79118), (260, 76075), (325, 60860), (340, 58175), (358, 55250), (425, 46540), (442, 44750), (500, 39559), (650, 30430), (716, 27625), (850, 23270), (884, 22375), (895, 22100), (1105, 17900), (1300, 15215), (1625, 12172), (1700, 11635), (1790, 11050), (2125, 9308), (2210, 8950), (2327, 8500), (3043, 6500), (3250, 6086), (3580, 5525), (4250, 4654), (4420, 4475)]